Analysis Getting Started » History » Revision 13
Revision 12 (Sean Jeffas, 05/11/2023 10:31 AM) → Revision 13/25 (Sean Jeffas, 05/11/2023 10:31 AM)
h1. Analysis Getting Started
These instructions are specific to the analyzer and SBS-offline installations existing under /work/halla/sbs, maintained by Andrew Puckett.
{{toc}}
h1. How to Reach the SBS Work Directory
* Log in to the JLab ifarm
** https://scicomp.jlab.org/docs/getting_started
* The SBS work directory is located at /work/halla/sbs
** Created a directory here with @mkdir username@
** If you do not have permission contact Ole Hansen (ole@jlab.org) and ask to be added to the SBS user group.
h1. Setting up Environments
* If you want to set up your own personal analyzer you can look here https://github.com/JeffersonLab/analyzer
h1. Getting Files from Cache
* All raw EVIO files from GMn are on tape at @/mss/halla/sbs@
* Cached EVIO files are located at @/cache/halla/sbs@
* To write files from tape to cache see documentation here, https://scicomp.jlab.org/docs/node/586
** For example, to get all EVIO splits from run runnumber in GMn to cache execute @jcache get /mss/halla/sbs/raw/*runnumber*@
h1. Setting up the SBS Replay
* If you do not plan to make changes to the replay code you can simply use the version located at @/work/halla/sbs/SBS_OFFLINE@ and @/work/halla/sbs/SBS_REPLAY@
* The SBS analysis is located at https://github.com/JeffersonLab/SBS-offline and https://github.com/JeffersonLab/SBS-replay
** You can copy the github versions to your own work directory, if you plan to make your own changes to the analysis
h2. SBS Installation
* Follow the README instructions on https://github.com/JeffersonLab/SBS-offline to install SBS-offline.
* After installing, there should be a directory, @install/run_replay_here@.
* Inside there should be one file named @.rootrc@ (it is a hidden file).
** Wherever you run the replay, this file must be there to load the SBS-offline libraries. Either run your replays here, or move the @.rootrc@ file to the new destination.
h2. SBS Replay Environments
* The following lines should be used in a script to define where the data and output files should be located
<pre>
setenv SBS_REPLAY path-to-your-replay/SBS-replay
setenv DB_DIR $SBS_REPLAY/DB
setenv DATA_DIR /cache/mss/halla/sbs/raw
setenv OUT_DIR path-to-your-volatile/rootfiles
setenv LOG_DIR path-to-your-volatile/logs
setenv ANALYZER_CONFIGPATH $SBS_REPLAY/replay
</code></pre>
* @DATA_DIR@ tells the replay where the EVIO files are.
* @OUT_DIR@ tells the replay where to put the output ROOT files.
h2. Running the SBS Replay
* The main replay script, with all detectors, is replay_gmn.C located at https://github.com/JeffersonLab/SBS-replay/tree/master/replay
* An example of running this using a shell script can be found here, /work/halla/sbs/puckett/GMN_ANALYSIS/run_GMN_swif2.csh